Horizontally swingable stool



Demo l, 5150 J. .11. DQNQHOE ETAL, 295339363 HORIZONTALLY SWINGABLE STOOL Filed April e, 194e BY 1MM @JM Patented Dec. 12, 1950 UNITED STATES TENT OFFICE HORIZONTALLY SWINGABLE STOOL John J. Donohoe, Belli-ose Manor, and Eugene A. Glasser, Kew Gardens, N. Y.

This invention relates to stools and especially to stools adapted to be adjusted from one operative position to another at the will of the operator.

One object of the invention is the provision of v a stool of the type referred to which will enable the operator to sit upon the stool and change from one operative position to another with respect to his work.

Another object of the invention is the provision of a stool of this type which may be constructed inexpensively and which will be efficient in operation.

With these and other objects in view, our invention comprises certain combinations and arrangements oi" parts as will be hereinafter specifically described and particularly pointed out in the appended claims, and illustrated in the accompanying drawings.

In the drawings:

l Figure 1 is a side view partially in section cf a device or apparatus constructed in accordance with the present invention; and Figure 2 is a view showing an alternative arrangement for supporting the seat.

Referring to the drawing, It) indicates a vertically disposed pivot pin secured to the floor. A 45 Y branch fitting II is journaled about the pivot pin Iii with the branch portion thereof, projecting upwardly and `the lower end thereof resting on a ball thrust bearing I2 positioned about the pivot pin It. The fitting II is preferably provided with upper and lower bearing bushing members I3, I4 to prevent wear as the tting is rotated about the pivot pin IB. A pipe I5 at its lower end, is secured to the upwardly projecting branch portion of the fitting II. At its upper end, the pipe member I5 is secured to the downwardly projecting branch portion of a second 45 branch fitting I6, the straight or run portion of which is provided with bearing bushings I'I, I8 journaled on a vertically disposed pivot pin IS. The straight or run portion of a third 45 branch fitting 20 which is also provided with bearing bushings 2l, 22 is journaled about the pivot pin I9 above the second tting I6 with the branch portion projecting upwardly. A second pipe member 23 at its lower end, is secured to the upwardly projecting branch portion of the third fitting 20. At its upper end, the second pipe member 23 is secured to the downwardly projecting branch portion of a fourth 45 Y branch tting 24. Within the straight of run portion of the fourth fitting 24 there is slidably mounted at its upper end a vertically disposed pipe member 25. At its lower end, the pipe member 25 carries a castor 26 which rests on the iioor. At its upper end, the pipe member 25 is provided with a bearing bushing 2l within which a seat supporting stud 28 is rotatably mounted. At its upper end, the stud 2S is provided with a seat 29 of any desired typ-e. A collar 3l is positioned about the stud 23 and rests on the pipe 25 and on the bushing 2l at the upper ends thereof. Intermediate its ends, the stud 28 is provided with a series of spaced holes 30, and the arrangement of parts is such that the height of the seat 29 may be adjusted by raising or lowering the stud 23 and thereafter supported in position by inserting a pin through a hole 32 in the collar 3| and into one of the holes 3Q in the stud 28.

In operation, the seat 29 is adjusted to the proper height in the manner described above. Thereafter, the position of the seat 29 may be adjusted in a horizontal plane by swinging the lowermost Y branch fitting I I about its pivot pin I6, and/or by swinging the two intermediate Y branch fittings I6, 26 about their pivot pin I9. The force necessary for obtaining these swinging or rotating movements may be effected by the operator simply by shifting his weight or by pushing his feet against the floor and/or by pushing or pulling with his hands.

In the event that only the lowermost tting I I swings about its pivot Ill, the seat 29 will travel in a circular path having a radius equal to the distance between the vertical center lines through the pivot I0 and the seat supporting stud 28. The radius of the smallest circular path thus possible for the seat 29 to move through, is the distance between the two above mentioned vertical straight lines when the upper angularly disposed pipe member 23 is positioned directly above the lower angularly disposed pipe member I5. On the other hand, the radius of the largest circular path through which the seat 29 may be thus moved is the distance between the vertical center line through pivot pin I0 and the vertical center line through the seat carrying stud 28 when the two angularly disposed pipe members I5, 23 extend outwardly in the same direction and in the same plane. As either of the two intermediate fittings IB, 2D swing about the pivot pin I9 the distance between the two vertical center lines through pivot pin I0 and the seat carrying stud 28 increases or decreases with the result that by swinging the lowermost fitting Il 3 about its pivot and the intermediate fittings I6, 20 about the pivot pin I9 the seat 29 may be moved simultaneously in two directions that is to say in a path about pin I!) that may be increased or decreased from one extreme to the other.

The feature of rotatably mounting the seat supporting stud 28 presents the advantage that as the seat 2S ismove'd. from one operative' position to "another the seat itself can be turned so that if the operator so desires he may always face in the same direction with respect to his Work.

By virtue of the fact that the weight of'the operator on the seat 29 is supported from the floor through the stud 28, the vertically disposed pipe 25 on which the collar 3l rests and the castor 26 carried by the pipe 25 there is little or no strain on the two main pivot pins Il] Aand .19. Furthermore, by virtue-` of the fact that the pipe 25 is slidably mounted in the uppermost .-Y branch -tting 24 the support for the seat remainseever present even though the floor is uneven and-the distance between it and the seat varies as .the adjustment of the seat is effected in a horizontal jplane.

'As stated above, with the arrangement of parts .i shown, .the seat may be moved to any position Awithin an larea dei-med by'two circles, one having a radius equal to the distance between a-vertical.

center line through the pivot pin l0 f anda ver- -.tical'centerl line through the. seat supporting` stud 28'when the angularly disposed-pipe member E3 is positioned directly above the `lower angularly disposedpipe member I5.and the .other having..

-a radius equal tothe distancebetween a vertical :center line through thepivot pin 'ID and a vertical center line through the seat supporting stud 28 whenthe two angularly disposed pipe members v23, 25 extendoutwardly and inthesameplane. .I

`In consequence with .this arrangement'itis impossible to.so.move the seatas tobring the center 'thereof within the area dened by the smaller of 'the two radii. In the event`this is found tobe objectionable'it'maybeavoided in anumber of ways. For example, as shown in 'Figure `2,'the castor 26 'may beomitted, the pipe"25"shortened, the "collar "3 I enlarged so that it would `rest "on ythe fitting 24 at the' upper .endthereoffand the various parts of 'the assembiy'so'arranged that a vertical centerline Would pass Athrough :the pivot'pin i6 and the'seat supporting 4stud-"28.

lHaving thus described our invention,weclaim: 1. An adjustable stool comprising an 'angularly 4disposed memberhaving meansadapted tobe rotatably securedto the floor, asecond angularly vdisposed memberV connectedto saidrst member, athirdangularlyv disposed member, 'means rotat- -ably connecting said third member withcsaidlsec- `ond member, `a fourth-angilarly-'disposedfmem- 0 ber connected toLsaid thirdmember, :anda :seat I'carrying member .rotatably lmounted Ain means onsaidlfourthmember.

2. An adjustable stool comprising an angularly disposed member having means adapted to be rotatably secured to the floor, a second angularly disposed member connected to said first member, a third angularly disposed member, means rotatably connecting said third member with said second member, a fourth angularly disposed member connected to said third member, a ver- '.tically disposed supporting -member slidably mounted in said. fourth member, faseat secured to said supporting member at the upper end thereof, and a castor secured to said supporting .memberat the lower end thereof.

3. An adjustable stool comprising an angularly 'disposed member having means adapted to be rotatablyk secured to the floor, a second angularly fdisposed member connected to said first member,

a'thirdangularly'disposed member, means rotatably connecting said third member with said second member, a fourth angularly disposed member connected to said third member, a vertically disposed .supporting .member slidably mounted in said fourth member, a castor secured to said supporting member at the lower end thereof, a bushing disposed within said supporting member at theupper end thereof, a vertically disposed supporting studrotatably mounted insaid bushing, and aseat carried by said studatthe upper end thereof.

4. An adjustable stool comprising an angularly 'disposed member having means adaptedto be rotatably secured to the floor, a second angularly disposed Vmember connected toy said rst'member, a third angularly disposed member,means rotatably connecting lsaid third member with -said second member, a fourth angularly disposed member connected to said third memberfa vertically disposed supporting member slidably mounted insaid fourth memberfa castor. secured to said supporting member at the lower end thereof, a bushing disposed within said support- Ving member at the upper end thereof a=vertically -disposed supporting stud rotatably and slidably mounted in saidbushing, means for supporting said stud in said bushing in different-adjusted positions, and a seat carriedlby saidstud-at the upper 'endithereo -JOHN J. DONOHOE.

EUGENE A. GLASSER.

REFERENCES CITED The following'referenees Vare of recordinthe le of this patent:

UNITED STATES PATENTS .Number Name .Date

.54,713 Genembre -May15,. 1866 505,138 Steese Sept,`.19, 1893 972,472 .Riebe ct. 11, 1910 1,322,551 Efaw Nov. 25, 1919 .1,484,229 Miles Feb. 19,1924 

